#A63B25#A63B25

#A63B25 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.146 H 33.4°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#A63B25
RGB	rgb(166, 59, 37)
HSL	hsl(10, 64%, 40%)
HSV	hsv(10, 78%, 65%)
CMYK	cmyk(0%, 64.5%, 77.7%, 34.9%)
CIE-LAB	lab(40.20, 42.89, 36.38)
CIE-LCH	lch(40.20, 56.24, 40.30°)
OKLab	oklab(50.08% 0.1216 0.0802)
OKLCH	oklch(50.08% 0.146 33.4)
XYZ	xyz(17.6257, 11.3710, 3.0166)
Luminance	0.1137 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B25 #2590A6

analogous

#A6254F #A63B25 #A67C25

triadic

#A63B25 #25A63B #3B25A6

tetradic

#A63B25 #4FA625 #2590A6 #7C25A6

square

#A63B25 #4FA625 #2590A6 #7C25A6

split-complementary

#A63B25 #25A67C #254FA6

monochromatic

#42170F #74291A #A63B25 #D25136 #DD7C68

Accessibility & contrast

On white

6.41

#A63B25 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63B25 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B25

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B25	#FFFFFF	#000000	##FFFFFF
##A63B25	1.00	6.41	3.27	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595022

Deuteranopia (green-blind)

#746821

Tritanopia (blue-blind)

#B71F37

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b25;
/* rgb */ color: rgb(166, 59, 37);
/* oklch */ color: oklch(50.1% 0.146 33.4);

Tailwind

colors: {
  custom: {
    50: '#c87661',
    500: '#a63b25',
    950: '#000000',
  },
}

SCSS

$custom: #a63b25;
$custom-light: #c87661;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b25",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 37
  },
  "hsl": {
    "h": 10.233,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50079,
    "c": 0.14566,
    "h": 33.4
  },
  "luminance": 0.11368
}

Semantic roles & 50–950 ramp

primary

#A63B25

secondary

#64B3C3

accent

#CAE741

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63B25

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →